Smelting-furnace.



P. PLANTINGA.

SMELTING FURNACE. APPLICATION FILED'IuLYz, 1912.

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PIERRE PLANTINGA, OF CLEVELAND, OHIO.

SMELTING-FURNACE.

Specification of Letters Patent. i Patented T1115 13,

Application led July 2, 1912. Serial No. 707,208.

T0 all whom it may concern Be it known that I, PIERRE PLANTINGA, a citizen of the United States, a resident of Cleveland, county of Cuyahoga, and State of Ohio, have invented a new and useful Improvement in Smelting-Furnaces, of which the following is a specification, the principle of the invention being herein explained and the best mode in whichv I have contemplated applying that principle, so as to distinguish it from other inventions.

My invention relates to furnaces, and particularly to furnaces designed to perform a smelting operation.

The obj ect of said invention is to control the distribution of heat within the smelting chamber of such a furnace in an advantageous and economical manner.

The said invention consists of means hereinafter fully described and particularly set forth in the claims.

The annexed drawing and the following description set forth in detail a certain means embodying my invention, the vdisclosed means however, constituting but one of various ways in which the principle of the invention may be applied.

In said annexed drawing:-Figure 1 is a vertical longitudinal section of a smelting furnace embodying my invention and Fig. 2 is a horizontal section of same. The illustrated embodiment of my invention comprises in its structure a generator or producer A for supplying gaseous fuel. This generator or producer communicates, through the medium of a duct B, with and discharges into the smelting chamber C. Also communicating with and discharging into this smelting chamber is a plurality of air-ducts D which communicate with a common air flue E. 'Ihese ducts have their upper sides open so as to communicate with the fuel duct B, and these open sides are each capable of being completely or partially covered by an adjustable or movable tile F. This tile therefore forms a common portion of the walls of each air-duct and the fuel-duct, and that end thereof nearest the smelting chamber determines and therefore terminates with the discharging end of the fuel-duct and the discharging end of the air-duct. Such end of the tile furthermore determines the point of initial communication between the air and fuel-ducts. and the ldirection of movement. or adjustability of the tile is parallel with the said ducts.

It will be seen that when gaseous fuel is being discharged into the smelting chamber through the duct B, and airis likewise passing into the latter through one of thel ducts D, and the mixed fuel andair is ignited, the

point of initialcombustion of the confluent streams will be located at a 'given point in the smelting chamber.M This location lwill depend upon the location of the dischargingk ends ofthe two ducts B and D, and these ends, being determinedl by the position of the end of the tile F, ytheposition ofvthis tile end will therefore determine the position of this point of initial combustion. Inasmuch as the distribution of the heat produced by this combustion dependsupon'the location of this point of initial combustion, it will. be seen that suchv distribution maybe controlled and tile F.

In the illustrated form of furnace, the outlet Gr from the smelting chamber is located at one side thereof and communicates with the chimney iiue H. The plurality of ducts D are parallel with each other and arranged side by side as shown, in'u'the same horizontal planes. It will therefore be seen that the products of combustion from the ignited mixture of gas and the air discharged from the different ducts D, travel through distances of varying length. This being true, if the discharging ends of the air-ducts were all in the same transverse plane, thevpoint of initial combustion would also be substantially in the same transverse plane passing through the smelting chamber C. In this event the point of initial combustion would vary markedly in distance from the outlet Gr and considerable waste of heat would thereby be incurred. By means of my invention, these points of initial combustion may be varied so that they may occupy positions such as will effect the greatest possible economy in the distribution of the heat, as will be readily understood by those skilled in the art. Furthermore, the provision of a multiplicity of air-ducts and means for changing the location of the points of initial combustion, permits eddies to be created in the smelting chamber, which are often desirable in order to permit of intimate contact between the flame and the material to be smelted.

In the wall of the smelting chamber and opposite the tiles F, I provide openings a, a, covered by suitable removable closures regulated by moving the through Which the tile F may be reached and adjusted as desired.

Having fully described my invention, what I claim and desire to secure by Letters Patent is 1. In a furnace, the combination of a gaseous-fuel duct; a plurality of air-ducts each communicating at its discharge-end With the discharge-end of said fuel duct; and means for varying the location of each of such places of communication.

2. In a furnace, the combination of a gaseous-fuel duct; a plurality of air-ducts each communicating at its discharge-end With the discharge-end of said fuel-duct; and means for varying the location of' each of such places of communication independently of each other.

3. In a furnace, the combination of a fixed gaseous fuel duct; an air duct parallel therewith; and a movable member forming' the end portion of the separating Walls of said two ducts so arranged that its movement may vary the location of the place of initial communication of said two ducts.

4. In a. furnace, the combination of a gaseousfuel duct; a plurality of air-ducts parallel therewith; and a plurality of movable members each separating an air-duct from said fuel-duct and terminating With the discharging end of such air-duct.

5. In a smelting furnace, the combination of a generator for supplying gaseous fuel; a smelting chamber; a horizontal duct establishingr communication between said generator and smelting chamber; an air supply; a horizontal duct communicating` With said air supply and discharging into said smclting chamber adjacent to the point of discharge therein of said fuel duct; and a movable member separating said fuel duct and air duct and arranged to vary the point of initial communication thereof.

6. In a furnace, the combination of a gaseousefuel duct; an air-duct open to communication with said fuel-duct; and a movable member covering the open portion of said air-duct whereby the initial place of such communication may be varied.

Signed by me this 27th day of June, 1912. r

PIERRE PLANTINGA. Attested by- WM. It. MILLER, A. E. Maraini..

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

